/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.apis.os;

import java.util.List;

import android.app.Activity;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.CompoundButton.OnCheckedChangeListener;

import com.example.android.apis.R;

public class SmsMessagingDemo extends Activity {
	/** Tag string for our debug logs */
	private static final String TAG = "SmsMessagingDemo";

	public static final String SMS_RECIPIENT_EXTRA = "com.example.android.apis.os.SMS_RECIPIENT";

	public static final String ACTION_SMS_SENT = "com.example.android.apis.os.SMS_SENT_ACTION";

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		setContentView(R.layout.sms_demo);

		if (getIntent().hasExtra(SMS_RECIPIENT_EXTRA)) {
			((TextView) findViewById(R.id.sms_recipient)).setText(getIntent()
					.getExtras().getString(SMS_RECIPIENT_EXTRA));
			((TextView) findViewById(R.id.sms_content)).requestFocus();
		}

		// Enable or disable the broadcast receiver depending on the checked
		// state of the checkbox.
		CheckBox enableCheckBox = (CheckBox) findViewById(R.id.sms_enable_receiver);

		final PackageManager pm = this.getPackageManager();
		final ComponentName componentName = new ComponentName(
				"com.example.android.apis",
				"com.example.android.apis.os.SmsMessageReceiver");

		enableCheckBox
				.setChecked(pm.getComponentEnabledSetting(componentName) == PackageManager.COMPONENT_ENABLED_STATE_ENABLED);

		enableCheckBox
				.setOnCheckedChangeListener(new OnCheckedChangeListener() {
					public void onCheckedChanged(CompoundButton buttonView,
							boolean isChecked) {
						Log.d(TAG, (isChecked ? "Enabling" : "Disabling")
								+ " SMS receiver");

						pm.setComponentEnabledSetting(
								componentName,
								isChecked ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
										: PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
								PackageManager.DONT_KILL_APP);
					}
				});

		final EditText recipientTextEdit = (EditText) SmsMessagingDemo.this
				.findViewById(R.id.sms_recipient);
		final EditText contentTextEdit = (EditText) SmsMessagingDemo.this
				.findViewById(R.id.sms_content);
		final TextView statusView = (TextView) SmsMessagingDemo.this
				.findViewById(R.id.sms_status);

		// Watch for send button clicks and send text messages.
		Button sendButton = (Button) findViewById(R.id.sms_send_message);
		sendButton.setOnClickListener(new OnClickListener() {
			public void onClick(View v) {
				if (TextUtils.isEmpty(recipientTextEdit.getText())) {
					Toast.makeText(SmsMessagingDemo.this,
							"Please enter a message recipient.",
							Toast.LENGTH_SHORT).show();
					return;
				}

				if (TextUtils.isEmpty(contentTextEdit.getText())) {
					Toast.makeText(SmsMessagingDemo.this,
							"Please enter a message body.", Toast.LENGTH_SHORT)
							.show();
					return;
				}

				recipientTextEdit.setEnabled(false);
				contentTextEdit.setEnabled(false);

				SmsManager sms = SmsManager.getDefault();

				List<String> messages = sms.divideMessage(contentTextEdit
						.getText().toString());

				String recipient = recipientTextEdit.getText().toString();
				for (String message : messages) {
					sms.sendTextMessage(recipient, null, message, PendingIntent
							.getBroadcast(SmsMessagingDemo.this, 0, new Intent(
									ACTION_SMS_SENT), 0), null);
				}
			}
		});

		// Register broadcast receivers for SMS sent and delivered intents
		registerReceiver(new BroadcastReceiver() {
			@Override
			public void onReceive(Context context, Intent intent) {
				String message = null;
				boolean error = true;
				switch (getResultCode()) {
				case Activity.RESULT_OK:
					message = "Message sent!";
					error = false;
					break;
				case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
					message = "Error.";
					break;
				case SmsManager.RESULT_ERROR_NO_SERVICE:
					message = "Error: No service.";
					break;
				case SmsManager.RESULT_ERROR_NULL_PDU:
					message = "Error: Null PDU.";
					break;
				case SmsManager.RESULT_ERROR_RADIO_OFF:
					message = "Error: Radio off.";
					break;
				}

				recipientTextEdit.setEnabled(true);
				contentTextEdit.setEnabled(true);
				contentTextEdit.setText("");

				statusView.setText(message);
				statusView.setTextColor(error ? Color.RED : Color.GREEN);
			}
		}, new IntentFilter(ACTION_SMS_SENT));
	}
}
